31-year-old Zac Vawter becomes the first
person to climb 103 floors

Amputee Vawter was wearing an experimental prosthetic leg controlled by his mind Sunday when he
participated in "SkyRise Chicago" climbing 103 floors on one of the world's tallest skyscrapers for a charity event. He completed it in 45minutes. As
Vawter thought about climbing stairs, the motors, chains and belts in
his leg synchronized the movements of its ankle and knee.
Brilliant tech!